DORTMUND, GERMANY - APRIL 07: Roberto Firmino (L) of Hoffenheim jumps for a header with Ilkay Guendogan (R) of Dortmund during the DFB Cup Quarter Final match between Borussia Dortmund and 1899 Hoffenheim at Signal Iduna Park on April 7, 2015 in Dortmund, Germany.  (Photo by Matthias Hangst/Bongarts/Getty Images)